From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C462C433F5 for ; Fri, 3 Sep 2021 10:57:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6659C6108E for ; Fri, 3 Sep 2021 10:57:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6659C6108E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id A8E838D0002; Fri, 3 Sep 2021 06:57:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A3F548D0001; Fri, 3 Sep 2021 06:57:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 92D948D0002; Fri, 3 Sep 2021 06:57:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0125.hostedemail.com [216.40.44.125]) by kanga.kvack.org (Postfix) with ESMTP id 84F268D0001 for ; Fri, 3 Sep 2021 06:57:19 -0400 (EDT) Received: from smtpin32.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 36450184DC006 for ; Fri, 3 Sep 2021 10:57:19 +0000 (UTC) X-FDA: 78545960598.32.58E9FEC Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf17.hostedemail.com (Postfix) with ESMTP id 943D9F00038D for ; Fri, 3 Sep 2021 10:57:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=pH6lyDsQLhgwMRLaWAWREDHIGMEyG56GDfi7GMO4tkM=; b=R+d22mg7A8AZCCfbCSmQhdRSAz bTpNJ84Bo4LuaADHlzUZuChvW7X6peHqeJZK64Ng1y1zh13tojjJakiGQhuWh5l51rWB+GWeJLO4X fMb3Sw9Q+hq88cEJhZAa0znvoiJ9JFUV1gu1qPw6DQaOYZ22W9a2m/6BLCuJfDKlsjHYabGykiSAM TAucwNgLoblRVqejNTzXAEozMjho5QTWTR8pwNt1s1RYQC19XHVamkZFnObK62O5UMLuX3TZEKLTn bQVMP/J6iNJNBRomPkRC9e5zokLZ33WNNxo6ehF7CA6loMkxwt1m9rnELq4tDuCb8KZa0Qp35BRIX E0pp7O4A==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mM6qm-004NOh-Fv; Fri, 03 Sep 2021 10:56:17 +0000 Date: Fri, 3 Sep 2021 11:55:12 +0100 From: Matthew Wilcox To: Liam Howlett Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton , Steven Rostedt , Michel Lespinasse , Vlastimil Babka Subject: Re: [PATCH v2] mmap_lock: Change trace and locking order Message-ID: References: <20210903022041.1843024-1-Liam.Howlett@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210903022041.1843024-1-Liam.Howlett@oracle.com> Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=R+d22mg7; dmarc=none; spf=none (imf17.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 943D9F00038D X-Stat-Signature: q49enapcjxysn4ikkhzrt64bne8i5544 X-HE-Tag: 1630666638-743790 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Sep 03, 2021 at 02:21:05AM +0000, Liam Howlett wrote: > Print to the trace log before releasing the lock to avoid racing with > other trace log printers of the same lock type. > > Signed-off-by: Liam R. Howlett > Suggested-by: Steven Rostedt (VMware) Reviewed-by: Matthew Wilcox (Oracle)